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ss7ja [257]
3 years ago
9

A human body while sleeping generates about 300 BTUs of body heat per hour. If two people are sleeping in a bedroom that is 12 f

t × 12 ft × 9 ft, how many BTUs per cubic foot do they produce in 8 hours? (to the nearest tenth)
Mathematics
2 answers:
Svetach [21]3 years ago
6 0
What u got to do is time the like term and do the unlike terms and the will be yo answer
Yuri [45]3 years ago
5 0

Answer:

3.7 BTUs per cubic foot.

Step-by-step explanation:

A human body while sleeping generates about 300 BTUs of body heat per hour.

We have to calculate the amount of heat per cubic feet produced by 2 persons sleeping in a bedroom of 12 ft×12 ft× 9 ft room in 8 hours.

Two persons will produce the heat in eight hours = 300×2×8 = 4800 BTUs

Volume of bedroom = 12×12×9 = 1296 cubic foot.

Now BTUs per cubic foot produced = Total body heat produced in 8 hours/Volume of room

= 4800/1296 = 3.703 = 3.7 BTUs per cubic foot.

Therefore answer is 3.7 BTUs per cubic foot.

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The ratio 2.5m to 60cm can be written in the form 1:n find the value of n. someone please help asap
Svetach [21]

Answer:

24

Step-by-step explanation:

2.5 divided by 2.5 equals 1. So 60 divided by 2.5 equals 24.

5 0
3 years ago
Read 2 more answers
if it takes 3 cups of sugar and 4 1/2 cups of flour for the recipe how many cups of flour for 4 cups of sugar
Vitek1552 [10]

Answer:6 cups

Step-by-step explanation:

3/4.5=4/x

Cross product

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X=18/3

X=6

8 0
3 years ago
HELLO. I NEED HELP ON A HANDFUL OF QUESTIONS. PLEASE HELP. ​
galben [10]

Question 7: $3945

78,900÷100×5= 3,945

or 789,00×0.05= $3,945

Question 8: I think it may be $675.46 ( but I'm not sure)

$1010 is her annual insurance premium so to find one month we need to divide $1010 by 12

$1010÷12= $84.20

also her annual real estate tax is $938 and to find one month we need to divide this by 12 as well.

$938÷12=$78.20

and in order to find out her combined monthly payment we need to add them all together

$513.12+$84.16+$78.16= $675.46

Question 9: is False

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Hope this helps

5 0
3 years ago
Brainliest and Five Stars for correct answers
wel
\bf \lim\limits_{x\to 9}~\cfrac{x^2-81}{x-9}\implies \cfrac{\stackrel{\textit{difference of squares}}{x^2-9^2}}{x-9}\implies \cfrac{\underline{(x-9)}(x+9)}{\underline{(x-9)}}
\\\\\\
\lim\limits_{x\to 9}~x+9\implies (9)+9\implies 18
3 0
3 years ago
FIND THE SUM:<br> (6x^2-2x-3)+(x^2-3x+1)<br><br> 1.6x^2+6x+3<br> 2.7x^2+5x+2<br> 3.7x^2-5x-2
Butoxors [25]

8x^2-5x-2

method

open bracket

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collect like terms

6x^2+2x^2-3-3x+1

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again collect like terms

8x^2-2x-3x-3+1

8x^2-5x-3+1. (-×-=+ addition but keeping sign minus

8x-5x-2. (-×+=-)

5 0
3 years ago
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